Oh you cynic!
Blazor was stated somewhat tongue in cheek. As gnarledcontractor said, just look at Silverlight. Hell, you only have to look at WPF and the will they/won't they drop it in favour of UWP to know that the Microsoft is far from perfect.
I still don't really get the hype surrounding Visual Studio Code. Ultimately it's just a glorified text editor and not a fully featured IDE. It depends on what your requirement is but branding it under Visual Studio was daft.